package com.yan.gulimall.order.config;

import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;

@Configuration
public class GuliFeignConfig {

    /**
     * 为了解决Feign相互调用丢数据问题再进行远程调用之前,需要先经过拦截器同步
     * @return
     */
    @Bean("requestInterceptor")
    public RequestInterceptor requestInterceptor(){
       return new RequestInterceptor(){
           @Override
           public void apply(RequestTemplate requestTemplate) {
               ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
               if (requestAttributes != null){
                   HttpServletRequest request = requestAttributes.getRequest();
                   // 同步请求头,主要是cookie
                   requestTemplate.header("Cookie",request.getHeader("Cookie"));
               }
           }
       };
    }

}
